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W C Greene
Moderator
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After conferring with Herb (the resident expert) on the McKeen drive, I can understand why nobody would want to duplicate this nowadays. OK, if they want to run the car, that's cool. I would like to see a "prototype" truck sideframe and by gosh..that large front driver! But whatever gets the job done is OK by me.
That old car looks pretty cool! Woodie
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It doesn't matter if you win or lose, its' how you rig the game.
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Bill Fornshell
Registered
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Hi Woodie,
Unless you are just having A play on words when you are referring to the front truck not being like the prototype, you might want to have a look at the last picture I posted.
Maybe (the resident expert)?? needs to take a close look and explain to you what he see.
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W C Greene
Moderator
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Bill-sorry, but I would have to see a side view of the truck. I imagine that the thing is OK, I just would like a better view. I know that ain't something that you could come up with, however. I will just have to go to Nevada and see it in the flesh! I would love that. Woodie
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It doesn't matter if you win or lose, its' how you rig the game.
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Herb Kephart
Moderator
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So Bill, what exactly is the drive arrangement now? Did a traction motor get put on the forward axle? Possible, but it would require changing the axle, as to accommodate the motor requires not only a machined area for the gear, but a keyway for the same, and also two machined journals for bronze bearings to hang the traction motor from. Not sure what the McKeen axle configuration is, but there isn't enough metal in a "normal" axle to do this. This would be assuming that the drive was diesel-electric.
If it is now diesel-mechanical, the mechanical McKeen drive had to be replaced with something else- something with a decent clutch, forward AND reverse capabilities, and a number of speeds- if anything over yard speeds would ever be contemplated. Diesels have a very limited operational range- probably 1800-2300 rpm for a Cat of the size that would physically fit into the car, so with mechanical drive a number of various ratios would be needed. This is why over the road trucks had 13 speed transmissions, before Allison automatics became common.
Do you have any info on this?
Herb 
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Fix it again, Mr Gates--it still works!"
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Bill Fornshell
Registered
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Well Herb,
I could make it easy for you and show you a few picture taken during the construction of the power truck but then you would know as much as I do.
Maybe when I am in a better mood.
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W C Greene
Moderator
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Bill-don't let us get to you. From the photo, it looks like the truck sideframes are right, I am just a nut for that big old front "driver". Over the years, I have seen some McKeen models built on diesel chassis and while they looked OK, they didn't have the big ol' wheel in front and that sorta disturbed me.
Now, if the shop crew would just get a big can of Dullcote and hose the car down, it would look more like the "real thing"...it's a beauty even with glossy paint. Woodie
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It doesn't matter if you win or lose, its' how you rig the game.
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| Posted: Fri Dec 11th, 2009 01:09 am |
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38th Post |
Herb Kephart
Moderator
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Save yourself the trouble Bill- I found photos on the web (obviously taken by someone in a good mood) that show that they have gone with a hydraulic drive
Herb
____________________
Fix it again, Mr Gates--it still works!"
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| Posted: Fri Dec 11th, 2009 01:47 am |
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39th Post |
Bill Fornshell
Registered
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Hi herb,
It would not have been any trouble as I have 5 or 6 picture taken during the construction and of the finished motor truck combination.
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| Posted: Sun Dec 13th, 2009 06:10 pm |
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40th Post |
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